Sixteen ounces of Ionic Silver Liquid with no odor or taste. If you are using a simple handheld Total for Dissolved Solids (TDS) Meter you must multiply by 2.5 for a corrected estimated Parts Per Million. Handheld TDS Meters are calibrated for Salt. Silver is much smaller measured in microns. Silver can't be measured by salt standards. Expensive lab testing is how we consistently maintain quality control. Do yourself a favor with daily maintenance of Silver. Why should you buy from us? We make an honest quality product at fair prices. Since you are shopping for Silver you obviously know what you want. You know right from hype. We do our best to make the best Silver money can buy. We know your time is valuable, and a quick internet search will reveal that Silver has a lot of tremendous benefits to offer.